Tool handle



Dec. 23, 1947. c. A. CARLSON TOOL HANDLE Filed Aug. 28, 1945 Patented Dec. 23, 1947 UNITED STATES PATENT OFFICE TOOL HANDLE Carl A. Carlson, Anchorage, Alaska Application August 28, 1945, Serial No. 613,125

2 Claims.

The present invention relates to tools and is more particularly concerned with an adjustable, detachable handle for various size les and the like.

The primary object of the invention is to provide a tool handle which can be attached to .tools having ordinarily, no handles, such as les and the like.

Another object of the invention is to provide a device of the character mentioned, which is readily adapted to tools with Shanks of various sizes and cross-sections.

A further object of the invention is to provide a device, of the character mentioned, of simpler and more compact construction than is disclosed by prior devices.

With the foregoing and other objects and advantages in view, the invention consists of the novel construction and rarrangement of parts hereinafter described and claimed.

In the accompanying drawings illustrating the invention,

Figure l is a side elevation of the invention.

Figure 2 is a longitudinal section thereof.

Figure 3 is a side elevation of the cylindrical core of the brace.

Figure 4 is a detail plan view of the jaw components of the brace.

Figure 5 is a longitudinal section of the locking sleeve component of the brace.

Figure 6 is a detail perspective view of the keeper component of the brace.

Like numerals are used in the description and drawings to designate the same parts of construction.

Essentially the invention is an adjustable brace and it consists of an ordinary straight handle I of wood or other suitable material in which is secured an interiorly threaded barrel 2 adapted to receive one end of a .tubular core 3. The core is provided longitudinally with the oppositely disposed slots Il, one of which is extended in the form of a narrow slot or recess 5, as shown in Figure 3.

A sleeve 6 is mounted on the core 3 and is provided with pin 1, in its wall, projecting into the narrow slot 5, thus allowing the sleeve to slide on the core. Sleeve 6 is provided with a longitudinal groove 8 for the reception of keeper plate 9 which is adapted to slide in said groove. This plate 9 bears against one side of the core 3 and is provided at the outer end with lugs I0 which project inwardly in relation to the core and slightly beyond the slot 4 therein. These lugs l0 are adapted to t in transverse grooves I I in the jaws I2 which are slidably mounted in the slots 4 of core 3. Jaws I2 are connected at their inner ends by coil spring I3 which keeps the jaws normallyspaced apart. The other ends of the jaws are tapered vto fit, with wedging effect, in the outer end of the core and they are suitably grooved as at I4 to rmly bite the shank 0i a'. IiQQl When.

closed on it by the rotation of handle I and the consequent sliding of sleeve 6 forward. The pressure of the sleeve against the inclined shoulders I5 on the jaws causes the jaws to clamp on the shank of the tool while at the same time it forced the tapered forward parts of the jaws into rm engagement with the outer end of core 3, thus securely fastening the shank of a tool in the brace, as assembled, By using the handle as ordinarily done with a screw driver or other tool having a handle, it may be used with various tools. When it is desired to remove the file or other tool the handle is rotated in reverse.

Having thus described my invention, what I claim as new and desire to secure by Letters Patentis:

1. A brace consisting of a .cylindrical core; a sleeve slidably mounted on said core, clamping jaws slidably mounted in said core, each of said jaws being provided with an inclined side forming a shoulder, a keeper slidably mounted between said sleeve and core, means on said keeper and in association with said jaws for maintaining the latter in operative position, the shoulders of said jaws being in contacting engagement with an end of said sleeve, and a handle rotatably mounted on said core to thereby cause said sleeve to slide on said core and effect a wedging action on the shoulders of said jaws.

2. A brace consisting of a cylindrical core provided with opposing longitudinal slots, one of which is formed with a narrower extension, clamping jaws connected byv a coiled spring adapted to separate same and provided with inclined sides forming shoulders and transverse grooves, a sleeve mounted to slide on said core and provided with a pin engaging said extension slot in said core and a longitudinal slot interiorly thereof, a keeper slidably mounted in the slot of said sleeve and provided with lugs adapted to engage the transverse grooves on the clamping jaws, and a rotatable handle threaded on the inner end of said core and adapted to impinge and slide said sleeve on said core and effect a wedging action on the shoulders of the clamping jaws.

CARL A. CARLSON.

REFERENCES CITED The following references are of record in the lile of this patent:

UNITED STATES PATENTS Number Name Date 728,276 Muehlberg May 19, 1903 885,946 Moore Apr. 28, 1908 FOREIGN PATENTS Number Country Date 1,044 Great Britain Jan. 9, 1884 32,640 Sweden Mar. 22, 1910 

